Molding-flask.



P. PRAYt MOLDING FLASK.

APPLICATION FILED DEG/.16. 1913.

1,1 10,679, Patented sept. 15, 1914L EN l t l l 14 l l 1 Z x m L l 1 1L y i M 17 5 7@ 3 4 E@ 74:7 10 I, r

759. Z'. 9 INI/ENTOR.

WITNESSES.- 4 Peter- Fray THE NORRIS PETERS 60,. #VOTO-LITHQ. WASHINGTON, D. C4

N: srafrns ra PETER FRAY, 0F TAMPA, FLORIDA.

` nonnina-FLASH.

inname.

Specication'of Letters'Patent.`

j Patented sept. i5, i914..

Applicationled December `16, 1913. Serial No. 65,94?.

To all whom-tt may concern.'

ABe it known that I, PETER have invented certain` new and useful lmence being had to the accompanying drawapplication.

This invention relates to improvements in molding flasks and is particularly `designed as a flask for molding-pumpshells for rotary pumps and particularly for that type used in mines and for dredging purposes where they are subjected toa large amount .of heavy usage and wear.

The object of the invention is to produce a molding flask whereby the shells, while being molded or cast, may be chilled which will harden themyand make them better able to stand the wear and tear lto which they may be subjected in practice.

A. further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes for which it is designed. These objects, I accomplish by means of such structure and relative arrangement of the parts as will fully appear by a perusal of the following specification and claims. I

On the drawings, similar characters of reference indicate the corresponding parts in the several views.

Figure l is a top plan view of the completey flask showing the casting in position therein and the molding sand removed from the upper portion of the same so as to show the location of the parts. Fig. 2 is a sectional view of the sametaken onaline X-X of Fig. 1. Fig. 3 is a fragmentary View of the outside of the drag and cope of the molding flask showing the means for holding a cooling conduit in position. Fig. 4 is a sectional view taken on a line Y-Y of Fig. 8.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 designates the bottom board of the flask and the numeral 2 the drag or lower portion of the flask provided with an inwardly FRAY, afcitizen of the United States, residing at Tampa, in the county of Hillsboro, State of F lorida,

ings, and to the characters of' reference' marked thereon, whichl forma part of this projecting flange 8 on yits upper inner edge. The numeral 4l `designates the cope or upper portion of the flaskand thenumeral 5 designates the molding sand.

ln making my Vimproved pump shells, the same are made'in two halves, one half being molded at a time and in the drawing the numeral 6 designates one of these halves as it appears after having been molded or cast inthe sand 5. lt is during the' molding or` casting period 'that 'l desire to chill the same for the purposessetforth and this l accomplish by means of tliefollowing structure and operation, namely:

I provide a metallic conduit 7 of substantially the shape of the interior of the cast- V ing 6, which conduit 7 `projects through one side of the flask where it is provided with an inlet opening 8. Said conduit is also provided with an interior outlet pipe 9 which projects centrally through the bottom of the flask, whereby, when the water is admitted through the inlet 8 it travels completely around the conduit 7 and out the pipe 9. This conduit 7 is provided with a plurality of projecting arms 10 through which are screw mounted set screws 11 which impinge against the flanges 3 whereby the position of the conduit 7 may be accurately determined. Said arms 10 projectl normally through the under edge of the cope 4f and are provided with slots l2 adapted to receive swinging pins 13 on the drag 2 which are adapted to receive keys 14 in order to hold the` conduit 7 in fixed position and away from the casting 6 during the pouring operation. j

The metal for the casting 6 is poured through the openings or ingates made in the sand inthe usual manner and as the same flows into the `molding sand and around the conduit 7 a stream of cold water is passed into the inlet 8 through said conduit 7 and outthe pipe 9, which cold water will form the chill for the casting as can conduit 7 which quickly chills the casting` and then as soon as the iron commences tov get stiff, the keys 14 are removed and the bolts 13 disengaged from the arms 10 and then the setscrews 1,1 are operated to liftl the conduit 7 away from the casting.

The flask is provided with the usual pin i and key structure 18 to join the cope andv drag together in theusual manner. j

From, the foregoing descriptionv it will readily be seen that I haveprvoduced such a device as substantially fulfils the objects ofthe invention as set forth herein.r I While this 'specification sets-forth in del tail ytherp'resent andv preferredxconstructionl ofthe device,` still inpractice, such deviations frorn such detail be resorted to 'as do not forni a departurefroin the spirity ofthe invention. j y' Having thus described 'my invention what I 'claim' as new and useful vand desire to securby Letters Patent'is' v1. Av device of the character describes.

comprising the coinbination with a niolding flask of a conduit adapted to be disposed adjacentthe'nieinber to be cast, said conduit being provided with an inlet andk outlet and I'liah'sl for adjusting the position ,of saidv conduit within said flask, as described.

2. A device of they character described yconi'prising the kcoinbination with a molding cpies or this paient may be 'obtained fof iask, of' a conduit adapted to be disposed i therein adjacent the member to be cast, said conduitbeiiig provided with an inlet and 30 out-let` projecting arms on said conduit, and

set screws projecting through said arms and implng-ingl against a portionof saidgflask whereby the position of saidr condutinay be adjusted 'by the inovement of said set screws, as described. jm j u A device. of the charactergdescribed 'comprising the coinbination with a vmolding flask, off a conduit adapted to bedisposed therein adjacent the rnemberftobe cast; said ycor-iduitbeing provided vwithy an inlet and outlet',` projecting arms'on said conduit, said armsA projecting vthrough the sidesrofsaid" flask,` and means mounted on saldfflaslr'and PETER Ianni? 

